Hello everyone! So I have a question that I'm trying to understand a bit more. I've done some research but still would like to know more; so any input would be greatly appreciated!

So I have a JBJ nano cube which I retrofitted with a 6 x 9 heatsink and 20 3w LEDs, 12 Royal Blue/8 Cool White. I believe the royal blue LEDs are xt-e and the cool whites are the xp-g but I'm not sure because I bought this kit from RapidLED about a year ago. My questions are these: I would like to know what Kelvin I'm at. The cool whites are rated between 5000-8300k but with the royal blues doesn't it make it higher? How would I be able to tell/calculate that. Also the tank is about 22in deep so do I have enough power to penetrate to the bottom of the tank? If not any recommendations on what to add/supplement? Or simply Put is that enough light for my tank?
I have a montipora undata at the highest point in the tank which has shown good growth but I still feel it could be better in growth and color. I'm hoping to get more sps towards the top (some acros, monti caps, chalices) and still keep lps at the bottom part but I want my lighting to be close to perfect before I invest the time and money. If you like to send me threads to read I won't mind at all sorry for the long post and I thank you all so much!